Question about Toshiba Satellite A15-S127 Notebook

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Memeory does not show up

RE: Toshiba Satellite A15-S127:
I removed the original PC2100S-2533-0-A1; 256MB, DDR, 266MHZ, CL2.5; MICRON MT8VDDT3264HDG-265C3; 200 PIN, SODIMM SDRAM, and installed 2 sticks of ELPIDA 512MB DDR PC2700 200-Pin Laptop SODIMM, total 1Gb; (Label on stick reads: 512MB PC2700S-2533-0-A1).

When I run HWiNFO32, a utility program to report hardware, it shows only 512 MB in the Row 1. What is wrong?
The OS is Windows XP.
I saw another posting similar to mine and in it it is advised to check CMOS. Would this aply to my question, also? If so, how to check and revise CMOS. At boot up, I pressed DEL, F5 and F7 keys, but I cannot get to CMOS setting. I only get to the screen to choose Safe Mode, with network, etc.

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  • 5 more comments 
  • MTAKASHI Mar 24, 2008

    Toshiba's manual states it supports 1 GB. At other web site, I saw PC2700 500MB x 2 pieces for the same model of laptop. So, I assumed these are compatible. Beyond that, I cannot determine. What would you suggest to determine?

  • MTAKASHI Mar 24, 2008

    1. The 2 sticks are the same Elpida
    2. The 2 sticks are the same, so they must be the same speed.
    3. I thought pC2700 refers to the speed. At it is DDR333. Does it mean 333 Mhz?

  • MTAKASHI Mar 24, 2008

    You misunderstood. The 2 RAMs I put are both the same Elpida RAMs. If DDR333 means 333mhz, then, both are 333 mhz. The old one, which I replaced and does not exist anymore in teh Laptop was 266 mhz.

  • MTAKASHI Mar 25, 2008

    As I wrote, HWinfo software indicates only 512 mb, not 1GB. How to get to bios? At boot up, I tried Del, F5 and F7, but noe lead me to bios; it simply lead me to boot up option screen, such as safe mode, normal mode, etc.

  • MTAKASHI Mar 26, 2008

    I tried F2 and F10. F10 did not do anything. Pressing F2, the screen simply showed 5 options near the bottom in graphical symbols, the left being several disks, second one disk, etc., and they lead to the same option screen for safe mode, normal, etc....none of them lead me to bios or CMOS. As I noted earlier, the OS is Windows XP.

  • MTAKASHI Mar 31, 2008

    Does it (hitting F2 gets you the Dos screen) apply to Windows XP?

  • Patrick Michaels
    Patrick Michaels May 11, 2010

    well..have you determined that the replacement memory is in fact compatible with this unit?



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step one...same or different maker(not that important, but nice to know)

step two..speed of the memory(usually in nanoseconds) these need to be within 25% of each other, max. Same is the best

step three..i don't see the processor compatibility speed on the second set you installed. First one is 266MHz..what's the second set rated at?

I know it fits mechanically, but that's only the basics with memory swapping.

Posted on Mar 24, 2008

  • 2 more comments 
  • Patrick Michaels
    Patrick Michaels Mar 24, 2008 you have 266 and 333 memory...that might be the cause..can your computer run on either of the combinations(only 266 or only 333)? if that's the case, then you have a basic memory imbalance issue..

  • Patrick Michaels
    Patrick Michaels Mar 25, 2008

    ahh..just working from the information that I read, let's have two new memory sticks in your laptop, neither of which your bios can see, right? did you go into bios to enquire as to whether those mem sticks are visible at that level?

  • Patrick Michaels
    Patrick Michaels Mar 25, 2008 boot up, it's get to bios..or possibly F10, depending on who's bios you have installed..

  • Patrick Michaels
    Patrick Michaels Mar 26, 2008

    that is truly weird..when I hit F2...i get a dos styled screen..this needs to be handled before the logo appears..



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